CN100557282C - Flow control valve - Google Patents
Flow control valve Download PDFInfo
- Publication number
- CN100557282C CN100557282C CNB2007101408253A CN200710140825A CN100557282C CN 100557282 C CN100557282 C CN 100557282C CN B2007101408253 A CNB2007101408253 A CN B2007101408253A CN 200710140825 A CN200710140825 A CN 200710140825A CN 100557282 C CN100557282 C CN 100557282C
- Authority
- CN
- China
- Prior art keywords
- axial
- valve element
- flow channel
- valve
- opening
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Electrically Driven Valve-Operating Means (AREA)
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
- Lift Valve (AREA)
- Flow Control (AREA)
Abstract
A kind of flow control valve (1) comprises stepper motor (2), axial member (5), pressing device (6) and valve element (7).Axial member (5) changes into axial force with the torque that stepper motor (2) applies, and moves axially going up of stepper motor (2) according to this axial force.Pressing device (6) applies pushing force.Valve element (7) by pressing device (6) pushing with contact axial member (5), and the pushing force that applies according to pressing device (6) and move in the axial direction from the axial force that axial member (5) is transmitted.Valve element (7) is arranged in the flow channel (3), and by making axial member (5) move the aperture of regulating flow channel (3) with movement of valve element (7) in the axial direction.
Description
Technical field
The present invention relates to a kind of flow control valve, it is converted into axial force with the torque that stepper motor applies, and uses the aperture of this axial force operation flow channel.
Background technique
Usually, for example for the air inflow of control motor in lost motion operation, adopted aforesaid flow control valve, this flow control valve is used for the stepper motor of actuator.
The flow control valve of this routine is converted into axial force with the torque that stepper motor applies, and has according to the described axial force valve body of displacement in the axial direction.Then, this normal flow control valve by the displacement valve body operate flow channel aperture (JP2006-37916A for example, JP11-201004A).
At this, the torque that is applied by stepper motor is converted into axial force as follows.Screw promptly is set, and the screw that is arranged on the valve body is screwed in the screw of described rotor on the rotor rotated by the energising of stepper motor.Then, valve body keeps not rotating by predetermined locker.Therefore, when when making that stepper motor energising makes the rotor rotation, the torque that is applied on the valve body is converted into axial force, and valve body is subjected to displacement under the effect of this axial force vertically.
Yet, for this normal flow control valve, because certain element (is the aperture functional unit, wherein formed flow channel from these parts, and the aperture of this flow channel is carried out operation) the axle center of axle center and valve body between have to a certain degree axial misalignment, so cause following valve leakage problem.
For example, as described in JP2006-37916A, when realizing by sliding valve style method (spool type valvemethod) by valve body opening and closing flow channel, need to make bigger glade plane space according to the degree of axially misalignment, preventing valve body locking, and valve leaks often, and expansion by this glade plane space causes.Equally, as described in JP11-201004A, when realizing valve body opening/closing flow channel by poppet valve method (poppet valve method), produced with respect to the inclination of seat according to the degree of axial misalignment, and valve leaks and is often caused by this inclination by the position.
Summary of the invention
The invention solves above problem, and the objective of the invention is, be used for the flow control valve of the stepper motor of actuator in employing, the axial misalignment degree between the axle center by improving the aperture operating element and the axle center of valve body reduces the possibility of valve leakage.
In order to realize purpose of the present invention, provide a kind of and controlled the flow control valve that flows in the fluid passage by the aperture of regulating flow channel.This flow control valve comprises stepper motor, axial member, pressing device and valve element.Axial member changes into axial force with the torque that stepper motor applies, and according to this axial force stepper motor axially on move.Pressing device applies pushing force.The valve element by pressing device pushing with the contact axial member, and the pushing force that applies according to pressing device and move in the axial direction from the axial force that axial member is transmitted.The valve planning in flow channel, and by make axial member in the axial direction displacement regulate the aperture of flow channel with the movement of valve element.
Description of drawings
From following description, accessory claim and accompanying drawing, will be well understood to the present invention with and additional purpose, feature and advantage, among the figure:
Fig. 1 is the schematic representation of expression according to the structure of the flow control valve of embodiment of the present invention.
Fig. 2 A is the front view according to the valve element of described mode of execution; And
Fig. 2 B is the planimetric map according to the valve element of described mode of execution.
Embodiment
Flow control valve according to one embodiment of the present invention has axial member and valve element, wherein said axial member is converted into axial force with the torque that stepper motor applies, and according to the displacement in the axial direction of this axial force, described valve element by the pushing of predetermined pressing device with the contact axial member, and pushing force that applies according to pressing device and the axial force displacement in the axial direction of transmitting from axial member.By axial member is moved in the axial direction with the movement of valve element, flow control valve is operated the aperture of flow channel.
By being seated on the edge of opening that defines prodefined opening, the valve element has been closed the aperture of flow channel fully, and the seat that is seated in valve element on the edge of opening is formed with respect to the plane at parallel open edge by face.
And seat is set equal to respect to the tilt angle on the plane parallel with edge of opening by face or less than 45 °.
In addition, the valve element has the slip axial component, it inserts predetermined cylindrical portion and is kept in the axial direction slidably by predetermined cylindrical portion, and should the slip axial component be divided in a circumferential direction and equals or more than three part, with the interior perimeter surface of sliding contact cylindrical portion.
(structure of mode of execution)
Hereinafter with reference to Fig. 1,2 describe the structure of the mode of execution of flow control valve 1.
Flow control valve 1 changes into axial force with the torque that stepper motor 2 applies, and adopts the aperture of this axial force operation flow channel.For example, in order to control the motor (not shown) air inflow in the lost motion operation, flow control valve 1 is arranged in the air inlet flow path (being called as bypass flow channel 3) (wherein, this air inlet flow path bypass is crossed throttle valve) that is used for lost motion operation, with the aperture of operation bypass flow channel 3.
As shown in Figure 1, this flow control valve 1 has axial member 5 and valve element 7, wherein said axial member 5 changes into axial force with the torque that stepper motor 2 applies, and according to axial force displacement in the axial direction, described valve element 7 is forced under the effect of spring 6 (pressing device) with axial member 5 and contacts, and according to the pushing force of spring 6 and the axial force displacement in the axial direction of transmitting from axial member 5.So that 7 displacements of valve element, flow control valve 1 is operated the aperture of bypass flow channel 3 by mobile in the axial direction axial member 5.
In addition, stepper motor 2 for example has the rotor (not shown) that has permanent magnet and has the stator (not shown) of field coil, and have a well-known structure, when making the field coil energising from the order of ECU (not shown), response produced the torque that is used to make the rotor rotation thus.
Axial member 5 has outside thread 9 on its periphery, and outside thread 9 is screwed into and is arranged in the epitrochanterian internal thread (not shown).And axial member 5 keeps not rotating by predetermined locker (not shown).When stepper motor 2 energisings and internal thread rotated with rotor, the torque that is applied on the axial member 5 by rotor was converted to axial force, and axial member 5 is subjected to displacement under the effect of this axial force vertically.
At this, forming circular open, and as the part of bypass flow channel 3, wherein this valve pocket 15 is as the part of bypass flow passage 3 and hold valve element 7 and spring 6 in the valve pocket 15 for cylindrical portion 12 openings.And cylindrical portion 12 is arranged to the rotating shaft center of the stepper motor of facing in the axial direction 2 coaxial.
As shown in Figure 2, slip axial component 13 has four flanges 21 (it contacts the inner circumferential surface 20 of cylindrical portion 12 slidably in the mode at interval of equal angles in a circumferential direction), and is divided into four parts in a circumferential direction with sliding contact inner circumferential surface 20.In addition, the slip axial component 13 of present embodiment is divided into four parts in a circumferential direction, with sliding contact inner circumferential surface 20, but can be divided into three parts with sliding contact or can be divided into equal or more than five parts with sliding contact.In addition, the part of sliding contact inner circumferential surface 20 does not need to be formed the shape of flange 21, but can select arbitrarily.
(effect of mode of execution)
The flow control valve 1 of present embodiment has axial member 5 and valve element 7, wherein said axial member 5 changes into axial force with the torque that stepper motor 2 applies, and according to the displacement in the axial direction of this axial force, described valve element 7 is urged under the effect of spring 6 with contact axial member 5, and according to the pushing force of spring 6 and the axial force displacement in the axial direction of transmitting from axial member 5.By axial member 5 is moved in the axial direction with movement of valve element 7, flow control valve 1 is operated the aperture of bypass flow channel 3.
Therefore, valve element 7 can not be restricted at its center simultaneously in displacement, and this is because have worm structure between axial member 5 and rotor.Like this,, and be independent of the axle center of rotor, therefore can reduce the possibility of valve leakage owing to valve element 7 can overlap with the axle center of cylindrical portion 12 at its center simultaneously substantially in displacement.
At this, will the degree of flexibility reason higher than conventional valve body at the axle center of valve element 7 be described.That is, conventional valve body has two functions, just torque is changed into the driving force transformation function of axial force and main valve function, and in order to realize the driving force transformation function, it has the worm structure of the rotor of band stepper motor 2.The axle center of valve body obviously is subjected to the restriction of worm structure.
On the other hand, according to the flow control valve 1 of present embodiment, conventional valve body is divided into axial member 5 with driving force transformation function and the valve element 7 with valve function, and valve element 7 is formed by spring 6 contact axial member 5.Thereby, although the axle center of valve element 7 is subjected to the pushing of pressing device and the restriction that contact with axial member, by the pushing of spring 6 with the restriction that contacts generation of axial member 5 with a little less than conventional worm structure is compared very.Therefore, the degree of flexibility of the axle center of valve element 7 is bigger than conventional valve body.
Like this, because the axle center of valve element 7 can change to overlap substantially with the axle center of aperture operating element, the axial degree of misalignment between the axle center that therefore can improve the aperture operating element and the axle center of valve body, and reduce the possibility of valve leakage.
And seat is formed with respect to plane α by face 18.
Thereby, even in cylindrical portion 12, produce negative pressure, for example make seat temporarily very closely be connected on the edge of opening 17 by face 18 because adhesive force a little less than, seat also can separate with edge of opening 17 at an easy rate by face 18.In addition, when edge of opening 17 is formed shape such as plane perpendicular to axial direction, as shown in Figure 1, described effect grow.
When seat does not tilt with respect to the plane α parallel with edge of opening 17 by face 18 (just when seat leans on face 18 to be parallel to plane α), if produce negative pressure at opening 16 places that are in complete closed state, for example make that seat closely is connected on the edge of opening 17 by face 18, then edge of opening 17 and seat become quite strong by the adhesive force between the face 18, and seat is difficult to separate with edge of opening 17 by face 18.Thereby, tilt with respect to the plane α parallel by face 18 by making seat with edge of opening 17, adhesive force is weakened.Like this, even seat temporarily very closely is connected on the edge of opening 17 by face 18, seat also can separate with edge of opening 17 at an easy rate by face 18.
In addition, taper angle theta is set equal to or less than 45 °.
When taper angle theta during greater than 45 °, seat is subjected to the interlock (biting) of edge of opening 17 to become big by face 18.Thereby, by being set at, taper angle theta is equal to or less than 45 °, and described interlock dies down.
In addition, slip axial component 13 is divided into four parts in a circumferential direction, with inner circumferential surface 20 sliding contacts of cylindrical portion 12.
Correspondingly, valve element 7 does not tilt, and makes valve element 7 level and smooth displacements and reduce the leakage rate of valve.
Those skilled in the art readily understand other advantage and improvement.Therefore shown in the present invention of wider implication is not limited to and described detail, representative device and illustrative embodiments.
Claims (3)
1. a flow control valve (1), it controls flowing in the flow channel (3) by the aperture of regulating flow channel (3), comprising:
Stepper motor (2);
Axial member (5), it changes into axial force with the torque that stepper motor (2) applies, and according to the axial top offset of this axial force at stepper motor (2);
Be used to apply the pressing device (6) of pushing force; And
Valve element (7), it is pushed with contact axial member (5) by pressing device (6), and the pushing force that applies according to pressing device (6) and the axial force transmitted from axial member (5) are subjected to displacement in the axial direction, wherein this valve element (7) is arranged in the flow channel (3), and by axial member (5) being subjected to displacement in the axial direction so that valve element (7) is subjected to displacement the aperture of regulating flow channel (3)
Wherein, described valve element (7) has slip axial component (13), it was inserted in the predetermined cylindrical portion (12) and by being scheduled to cylindrical portion (12) and keeps slidably in the axial direction, and wherein the inner circumferential surface (20) of this cylindrical portion (12) defines described flow channel (3), and
Described slip axial component (13) is divided into the part more than three or three, and these parts are arranged on the circumferencial direction of slip axial component (13) with sliding contact inner circumferential surface (20).
2. flow control valve as claimed in claim 1 (1), it is characterized in that, also comprise edge of opening (17), it defines the prodefined opening (16) of flow channel (3), wherein valve element (7) has seat by face (18), when valve element (7) was subjected to displacement aperture with complete closed flow channel (3), on edge of opening (17), and described seat was formed with respect to the plane (α) parallel with edge of opening (17) by face (18) described seat by face (18) seating.
3. flow control valve as claimed in claim 2 (1) is characterized in that, described seat is set equal to respect to the tilt angle (θ) on the plane (α) parallel with edge of opening (17) by face (18) or less than 45 °.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP218685/2006 | 2006-08-10 | ||
| JP2006218685A JP4929913B2 (en) | 2006-08-10 | 2006-08-10 | Flow control valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101122347A CN101122347A (en) | 2008-02-13 |
| CN100557282C true CN100557282C (en) | 2009-11-04 |
Family
ID=39084795
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007101408253A Expired - Fee Related CN100557282C (en) | 2006-08-10 | 2007-08-10 | Flow control valve |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4929913B2 (en) |
| CN (1) | CN100557282C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101251204B (en) * | 2008-03-14 | 2010-06-02 | 武汉市天虹仪表有限责任公司 | Gas flow regulating valve |
| KR101150658B1 (en) * | 2008-08-29 | 2012-05-29 | 이근상 | Aperture Type Variable Valve |
| US20120205564A1 (en) * | 2009-10-22 | 2012-08-16 | Klein Jeffrey F | Fluid actuated valve and installation tool |
| JP5560403B2 (en) * | 2010-09-07 | 2014-07-30 | 株式会社テージーケー | Stepping motor driven control valve |
| JP6080182B1 (en) * | 2015-12-02 | 2017-02-15 | 日本電産サンキョーシーエムアイ株式会社 | Motor-driven on / off valve |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53116828A (en) * | 1977-03-23 | 1978-10-12 | Bell & Howell Japan | Autoofocusing system for zoom lens |
| JP2000193101A (en) * | 1998-12-25 | 2000-07-14 | Fuji Koki Corp | Flow control valve |
| JP2005282649A (en) * | 2004-03-29 | 2005-10-13 | Tgk Co Ltd | Flow rate control valve |
| JP2005351308A (en) * | 2004-06-08 | 2005-12-22 | Ckd Corp | Control method of flow control valve |
-
2006
- 2006-08-10 JP JP2006218685A patent/JP4929913B2/en not_active Expired - Fee Related
-
2007
- 2007-08-10 CN CNB2007101408253A patent/CN100557282C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP4929913B2 (en) | 2012-05-09 |
| CN101122347A (en) | 2008-02-13 |
| JP2008046670A (en) | 2008-02-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1806550B1 (en) | Motor operated valve | |
| KR101234937B1 (en) | Motor-operated valve | |
| CN100557282C (en) | Flow control valve | |
| JP5772881B2 (en) | solenoid valve | |
| EP2006586A2 (en) | Dynamic ball valve sealing device for three-way valves | |
| US9080684B2 (en) | Solenoid device and driver assistance device | |
| JP2000002347A (en) | Valve | |
| US9068660B2 (en) | Valve device with a flow guiding device | |
| KR20130137640A (en) | Control valve | |
| JP7369225B2 (en) | electronic expansion valve | |
| KR20070114317A (en) | Flow rate control valve | |
| JP7369815B2 (en) | electronic expansion valve | |
| CN109519564A (en) | Motor-driven valve | |
| KR101822282B1 (en) | Valve device for vehicle | |
| KR20080112147A (en) | A long-stroke regulator valve with a stop function | |
| CN217519254U (en) | Double-orifice expansion valve and refrigerating system comprising same | |
| US9500139B2 (en) | Variable intake throttle valve with spring | |
| CN211261369U (en) | Electronic expansion valve | |
| KR100289421B1 (en) | A motor with a friction mechanism mounted thereon and an apparatus having the motor for controlling the flow-rate of fluid liquid | |
| CN220227913U (en) | Ultrasonic motor driven multiple valve for battery production | |
| JP3005947U (en) | Flow control valve | |
| JP3679492B2 (en) | Electric control valve | |
| CN112460860A (en) | Electronic expansion valve | |
| JP4158038B2 (en) | solenoid valve | |
| CN115405709A (en) | Double-orifice expansion valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091104 Termination date: 20130810 |